No one implied causation. The study found that states who legalized medical marijuana found a decrease in opium mortality but roughly 20% after 2 years. Around

No one implied causation. The study found that states who legalized medical marijuana found a decrease in opium mortality but roughly 20% after 2 years. Around the country, opium mortality rates are increasing. Thus it is quite reasonable to say 'the opium mortality rate is statistically significantly less in medical marijuana states than in others.' No one has claimed anything more than that, and it is in fact science.